20201333213 has 4 divisors (see below), whose sum is σ = 20897930940. Its totient is φ = 19504735488.

The previous prime is 20201333209. The next prime is 20201333227. The reversal of 20201333213 is 31233310202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13169169049 + 7032164164 = 114757^2 + 83858^2 .

It is a cyclic number.

It is not a de Polignac number, because 20201333213 - 2² = 20201333209 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20201333263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 348298820 + ... + 348298877.

It is an arithmetic number, because the mean of its divisors is an integer number (5224482735).

Almost surely, 2^20201333213 is an apocalyptic number.

It is an amenable number.

20201333213 is a deficient number, since it is larger than the sum of its proper divisors (696597727).

20201333213 is an equidigital number, since it uses as much as digits as its factorization.

20201333213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696597726.

The product of its (nonzero) digits is 648, while the sum is 20.

Adding to 20201333213 its reverse (31233310202), we get a palindrome (51434643415).

The spelling of 20201333213 in words is "twenty billion, two hundred one million, three hundred thirty-three thousand, two hundred thirteen".